def add(a,b):
    print(f"ADDING {a}+{b}")
    return a+b

def subtract(a,b):
    print(f"SUBTRACT {a}+{b}")
    return a-b

def multiply(a,b):
    print(f"MULTIPLY {a}/{b}")
    return a/b

def divide(a,b):
    print(f"DIVID {a}*{b}")
    return a*b

print("Let's do same math with just functions!")

age=add(30,30)
height=subtract(78,4)
weight=multiply(90,2)
iq=divide(199,2)

print(f"Age:{age}.height:{height}.weight:{weight}.iq:{iq}")

print("Here is a puzzle.")

what=add(age,subtract(height,multiply(weight,divide(iq,2))))

print("That become:",what, "Can you do it by hand?")
